Apparatus for cleaning coke oven doors

ABSTRACT

A door cleaning apparatus for removing deposits of carbon, tar, or the like from a coke oven door is disclosed. The coke oven door has a door frame, a plug on the oven side of the door frame and a sealing strip on the periphery of the door frame. The plug is provided with a tapered surface extending outwardly toward the door frame and defining a gas channel with the sealing strip on the periphery of the door frame. The door cleaning apparatus has a cleaner frame having a cleaner back plate and a cleaner side plate projecting from the cleaner back plate. The cleaner side plate and the cleaner back plate define a receiving cavity. Drive means are connected to either the cleaning apparatus or the oven door for causing relative reciprocating movement between the coke oven door and the cleaner frame between an aligned position where the coke oven door and the cleaner frame are aligned and a cleaning position where the cleaner frame receives the plug in the receiving cavity. A plug surface cutter means is mounted on the receiving cavity side of the cleaner side plate and has biasing means for biasing the plug surface cutter means inwardly toward the tapered surface of the plug. This drive means is operable to cause the plug surface cutter means to engage and move along the taper on the tapered surface of the plug to increase the biasing between the plug surface cutter means and the taper so that the plug surface cutter means removes the deleterious deposits from the tapered surface during the relative movement between the cleaner frame and the coke oven door.

United States Patent [1 1 Moreau DOORS [76] Inventor: Albert T. Moreau,91 Vermillion Dr., Levittown, Pa. 19054 [22] Filed: Oct. 12, 1971 [21]Appl. No: 188,281

Primary Examiner-Leon Machlin AttmeyRobert J. Leek, Jr.

[5 7] ABSTRACT A door cleaning apparatus for removing deposits ofcarbon, tar, or the like from a coke oven door is disclosed.

The coke oven door has a door frame, a plug on the APPARATUS FORCLEANING COKE OVEN V Nov. 27, 1973 oven side of the door frame and asealing strip on the periphery of the door frame. The plug is providedwith a tapered surface extending outwardly toward the door frame anddefining a gas channel with the sealing strip on the periphery of thedoorframe. The door cleaning apparatus has a cleaner frame having acleaner back plate and a cleaner side plate projecting from the cleanerback plate. The cleaner side plate and the cleaner back plate define areceiving cavity. Drive means are connected to either the cleaningapparatus or the oven door for causing relative reciprocating movementbetween the coke oven door and the cleaner frame between an alignedposition where the coke oven door and the cleaner frame are aligned anda cleaning position where the cleaner frame receives the plug in thereceiving cavity. A plug surface cutter means is mounted on thereceiving cavity side of the cleaner side plate and has biasing meansfor biasing the plug surface cutter means inwardly toward the taperedsurface of the plug. This drive means is operable to cause the plugsurface cutter means toengage and move along the taper on the taperedsurface of the plug to increase the biasing between the plug surfacecutter means and the taper so that the plug surface cutter means removesthe deleterious deposits from the tapered surface during the relativemovement between the cleaner frame and the coke oven door.

18 Claims, 29 Drawing Figures a4 I 86 I l\\\\\\\\\\\\\ v /84 78 50a 50b5 75 64 64 Q 2 94 62 52 62 8 3 96 9/ 53 i: 94. 7 92 R g 95 M697 2 5 5058 5' f e 74 M30 :97L 70 70 72 l i 7? a 32 67 7 V 82 8 Sheets-Sheet 1 jkl:

Pafented Nov. 27

Patented Nov. 27, 1973 3,774,258

8 Sheets-Sheet 2 Fla 3 ALBERT 7. MOREAU Attorney Patented Nov. 27, 19733,774,258

8 Sheets-Sheet 5 FIG 5 INVENTOR AL amr r. MOREAU A Morn ey Patented Nov.27, 1973 3,774,258

8 Sheets-Sheet 5 FIG 9v FIG /0 By I I A omey l i A ALBERT r MORE/1UPatented Nov. 27, 1973 3,774,258

8 Sheets-Sheet 6 F/GI /3A FIG. I30

lNl/E/VTUR AL BERT 7.' MOREAU A Ho may Patented Nov. 27, 1973 3,774,258

8 Sheets-Sheet 7 FIG. /4 FIG: /5

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AI/orney r APPARATUS FOR CLEANING COKE OVEN DOORS BACKGROUND OF THEINVENTION Doors for by-product coke ovens are massive and are muchlonger (about 12 feet) than they are wide (approximately 1 foot 8inches). These doors have massive insulating refractory plugs whichprotrude (approximately 10 inches) from the main sealing surface. Theplugs protect the steel portion of the door from the intense heat of theinner oven and also increase coking efficiency by reducing heat losses.A stainless steel sealing strip on the coke oven door contacts amachined surface at the door jamb on the oven to provide the necessarygas tight seal on the oven, thereby keeping air out and produced gasesin. The plug forms a long rectangle with square corners, and a gaschannel (defined by the plug and sealing strip) forms a slightly largerrectangle with rounded comers.

A coke oven door has a frame, stainless steel sealing strip, diaphragm,adjusting screws, and a refractory plug. The plug may be built up withindividual bricks or fabricated of cast refractory sections. Theadjusting screws are used to correct for warpage of the door due toexcessive and extensive heating thereby insuring that the sealing edgelies in a plane and makes good contact with a machined surface on thedoor jamb. The doors are removed from the ovens by means of a doormachine to permit the pushing out of the coke. The door machine graspsthe door by means of hooks, turns the latches, pulls the door out ofposition in the oven and rotates the door into an aligned position forcleaning.

, Carbon builds up on the side of the door plug, and carbon and taraccumulate in the gas channel. These deposits must be cleaned off thedoor: (1) to maintain clearance tolerances so that the door can be putback onto the oven; (2) to allow migration of gas produced in the cokingprocess through the gas channel; (3) to allow gas migration along thegas channel to the top of the ovens and out of the ovens; and (4) toallow the seal to be made between the stainless steel sealing strip andthe machined jamb on the oven.

The two surfaces to be cleaned are the side of the plug and the gaschannel and these two surfaces are perpendicular to each other.

At present, coke oven doors are cleaned through the use of manual labor.A workman uses a suitable length of rod with a blade on the end toscrape off the carbon and tar.

I am aware of the following prior art patents:

U.S. Pat. No. Inventor Issued Class 1,759,014 McIntosh 5/20/30 1,759,015McIntosh 5/20/30 1,916,021 Sheri-ill et a1. 6/27/33 2,293,434 Giese, Jr.8/18/42 202/248 2,746,610 Henseleit 5/22/56 212/4 2,986,758 Randell eta1. 6/6/61 15/93 3,037,227 Randell et a1. 6/5/62 15/93 3,056,699 Randellet a1. 10/2/62 134/5 3,115,655 Bowman 12/31/63 /93 3,120,668 Cook et a1.2/11/64 15/21 3,220,038 Balitsky et a1. 11/30/65 15121 3,464,074 Stankeet al. 9/2/69 15/93 3,543,322 Stanke et 21. 12/1/70 15/93 OBJECTS OF THEPRESENT INVENTION The objects of the present invention are to overcomethe objections to and deficiencies in the prior art manual cleaning ofcoke oven doors by the provision of an improved door cleaning apparatuswhich:

a. can be readily mounted on the door removal ma chine;

b. cleans the coke oven door in about a few seconds;

c. automatically cleans the tapered surfaces of the door plug, the gaschannel and the corners of the gas channel in one operation;

d. automatically cleans the junction line between the tapered surfacesof the plug and the gas channel;

e. is simple and rugged in structure and provides long maintenance freeoperational life;

f. utilizes segmented cutter blades to satisfactorily clean irregularsurfaces on the coke oven door caused by heat warpage of the coke ovendoor, repairs to the coke oven door, and the rebuilding of the coke ovendoor;

g. provides simultaneous complete cleaning of the tapered surfaces ofthe door plug, the gas channel and the corners'of the gas channel at theend of the relative movement between the cleaning apparatus and the cokeoven door; and

h. utilizes a single force, the relative movement between the coke ovendoor and the cleaning apparatus, to accomplish all cleaning operationson the coke oven door.

BRIEF SUMMARY OF THE INVENTION The aforesaid objects of this inventionand other objects which will become apparent as the description proceedsare achieved by providing an improved door cleaning apparatus forremoving deposits of carbon, tar, and the like from a coke oven door.The coke oven h door has a door frame, a plug on the oven side of thedoor frame, and a sealing strip on the periphery of the door frame. Theplug is provided with a tapered surface having a taper extendingoutwardly toward the door frame and defining a gas channel with thesealing strip on the periphery of the door frame. The door cleaningapparatus has a cleaner frame having a cleaner back plate and a cleanerside plate projecting from the back plate. The cleaner side plate andcleaner back plate define a receiving cavity. Drive means are connectedto either the cleaning apparatus or the oven door to cause relativereciprocating movement between the coke oven door and the cleaner framebetween an aligned position where the coke oven door and the cleanerframe are aligned and a cleaning position where the cleaner framereceives the plug in the receiving cavity. A plug surface cutter meansis mounted on the receiving cavity side of the cleaner side plate andhas biasing means for biasing the plug surface cutter means inwardlytoward the tapered surface of the plug. This drive means is operable tocause the plug surface cutter means to engage and move along the taperon the tapered surface of the plug to increase the biasing between theplug surface cutter means and the taper so that the plug surface cuttermeans removes the deleterious deposits from the tapered surface duringthe relative movement between the cleaner frame and the coke oven door.

BRIEF DESCRIPTION OF THE VIEWS IN THE DRAWINGS Referring now to thedrawings wherein like numerals in theseveral views indicate similarparts: 7

FIG. 1 is a-front elevational view of a coke oven door and-oven frameshowing the alignment guides and the latches in engagement with the ovenframe;

FIG. 2 is a vertical sectional view of the coke oven door and oven frametaken along the line 2-2 of FIG. 1 in the direction of the arrows;

FIG. 3 is a horizontal sectional view taken along the line 33 of FIG. 2in the direction of the arrows;

FIG. 4 is a rear elevational view of the coke oven door shown in FIG. 1showing the tapered plug, the door frame, the peripheral sealing strip,and the gas channel;

FIG. 5 is a diagrammatic plan view, on a smaller scale than FIG. 6 ofthe door cleaning apparatus and the door removal apparatus showing thecoke oven door being moved into position into alignment with the doorcleaning apparatus;

FIG. 6 is a side elevational view of the door cleaning apparatus, thealigned coke oven door and the door removal apparatus;

FIG. 7 is a fragmentary side elevational view of the upper portion ofthe door cleaning apparatus shown in FIG. 6 showing the upper guidewheel, top gas channel cleaning device, the upper left corner cleaningdevice, as viewed in FIG. 4, and the left-hand plug cleaning device asviewed in FIG. 4 and taken along the line 77 of FIG. 8 in the directionof the arrows;

FIG. 8 is a horizontal sectional view of the plug cleaning device andthe gas channel cleaning device;

FIG. 9 is an enlarged side elevational view of the pivotable cutterblade of the gas channel cleaning device shown in FIG. 7;

FIG. 10 is a side elevational view of the L-shaped plates, adjustmentnut on such L-shaped plates and cutter blade associated with the gaschannel cleaning device shown in FIG. 7;

FIG. 1 1 is a side elevational view showing the stationary rotation nut,shown in section with respect to the rotating means for the cornercleaning device;

FIG. 12 is a fragmentary enlarged view taken along a line similar to theline 12-12 of FIG. 4 in the direction of the arrows and showing thecooperative operation of the plug cleaning device, the gas channelcleaning device, and the corner cleaning device;

FIGS. 13A-13D are diagrammatic side elevational views showing thecooperative operation of the plug cleaning device and the gas channelcleaning device;

FIG. 14 is a fragmentary side elevational view of an alternativeembodiment of the biasing means for the plug cleaner showing a fastenerand link means;

FIG. 15 is a view similar to FIG. 14 of another embodiment of thebiasing means for the plug cleaner showing a plurality of wedges andguides;

FIG. 16 is a view similar to FIGS. 14,15 showing a fluid cylinder as abiasing means for the plug cleaner device;

FIG. 17 is a view similar to FIGS. 14-16 showing a solenoid as analternative form of the biasing means for the plug cleaning device;

FIG. 18 is a view similar to FIGS. 14-17 showing a spring as a biasingmeans for the plug cleaner device;

FIG. 19 is a fragmentary enlarged sectional view of the second biasingmeans or tensioning device for the gas channel cleaner device;

FIG. 20 is a view similar to FIG. 19 of a fluid cylinder as a secondbiasing means for the gas channel cleaning device;

FIG. 21 is a fragmentary enlarged side elevational view of thepositioning means for the gas channel cleaning device showing asolenoid;

FIG. 22 is a view similar to FIG. 21 of an alternative positioning meansfor the gas channel cleaning device showing a fluid cylinder;

FIG. 23 is a fragmentary enlarged side elevational view of analternative embodiment of the tensioning means for the comer cleaningdevice showing it as a shock absorber;

FIG. 24 is a view similar to FIG. 23 of another alternative embodimentof the tensioning means for the corner cleaning device showing it as afluid cylinder;

FIG. 25 is a fragmentary enlarged view of the altemative embodiment ofthe rotating means for the corner cleaning device showing it as asolenoid; and

FIG. 26 is a view similar to FIG. 25 of another embodiment of therotating means for the corner cleaning device showing it as a reversingmotor.

Although the principles of this invention are broadly applicable to thecleaning of deleterious deposits, such as carbon, tar, and the like,from an operating member, this invention is particularly adapted for usein conjunction with the removal of such deposits from a coke oven doorand hence it has been so illustrated and will be so described.

DETAILED DESCRIPTION With specific reference to the form of thisinvention illustrated in the drawings and referring particularly toFIGS. 1-8, 13A-13D, a coke oven door is indicated generally by thereference numeral 10. This coke oven door 10 has a door frame 12 (FIGS.14,6,8), a refractory plug 14 (FIGS. 1,2,3,4,7,8,13A-13D) on one side ofthe door frame 12 (in this case, the oven side) and the refractory plug14 has a tapered surface 16 (FIGS. 2,3,4,8,13Al3D). The taper on thetapered surface 16 extends outwardly toward the door frame 12 anddefines a gas channel 18 (FIGS. 3,4,7,8,13A13D) with a metallicperiphery sealing strip 20 (FIGS. 3,4,7,8,13A13D) on the periphery ofthe door frame 12.

As shown in FIGS. l-4, the coke oven door 10 is provided withoscillatable latches 22 (FIGS. 1,2,3) and opposed guides 24 (FIGS. 1,2)for mounting the coke oven door 10 on a door jamb 26 (FIG. 3) of an oven28 (FIG. 3). As shown particularly in FIG. 1, the latches 22 are engagedin clips 30 (FIGS. l-3) on the door jamb 26 of the oven 28 and theguides 24 comprise, for example, on the top a male member 32a (FIGS.1,2) extending from the door frame 12 into a slotted female member 340(FIGS. 1,2) on the door jamb 26. At the bottom, a female member 34b(FIGS, 1,2) extends from the door frame 12 about a male member 32b(FIGS. 1,2) mounted on the door jamb 26.

It will be understood from a consideration of FIGS. 1-4 that theperipheral sealing strip 20 engages a machined surface 36 (FIG. 3) onthe door jamb 26 to seal the coke oven door 10 to the oven 28.

Referring now to FIGS. 5 and 6, the coke oven door 10 may be removedfrom the oven 28 by a door removal apparatus 38 of the type shown in thefollowing US. patents.

Koppers Co., Inc.

2,784,849 3/l2/57 Gilliott 2,796,995 6/25/57 VanAckeren Koppers Co.,Inc.

et al.

2,807,372 9/24/57 Henseleit Koppers Co., Inc.

2,972,422 2/21/61 Stone National Steel Corp.

Such apparatus 38 is movable into position on wheels 40 (FIG. 6) inengagement with tracks 42 (FIG. 6) in front of the oven 28 whereupon thedoor removal apparatus 38 engages the latches 22, moves the latches 22to the open position shown in the dotted lines of FIG. 1 and whilesupporting the door 10, moves it 90 as shown in FIG. into alignment withthe door cleaning apparatus 44 (FIGS. 5,6,7,8) of the present invention.

DOOR CLEANING APPARATUS 44 This door cleaning apparatus 44 has a cleanerframe 46 (FIGS. 7,8) which is provided with a cleaner back plate 48(FIG. 8), cleaner side plates 50a and 50b (FIG. 8) and end plates 50c(FIGS. 7,8). These cleaner side plates 50a and 50b and thecleaner backplate 48 define a receiving cavity 52 (FIG. 8).

Drive means such as the cylinders 54 (FIGS. 5 and 6) extend from theframe 56 (FIG. 6) of the door removal apparatus 38 to the cleaner frame46 of the door cleaning apparatus 44. It will be understood that suchdrive means or cylinders 54 (FIGS. 5,6) may be connected to either oneof the door cleaning apparatus 44 or the coke oven door for causingrelative reciprocating movement between the coke oven door 10 and thecleaner frame 46 between an aligned position shown in FIG. 8 where thecoke oven door 10 and the cleaner frame 46 are aligned and a cleaningposition (FIGS. 13B13D) where the cleaner frame 46 receives the plug 14of the door 10 in the receiving cavity 52.

PLUG SURFACE CUI IER MEANS 58 Plug surface cutter means 58 (FIGS.6,8,13A-13D) are mounted on the receiving cavity side of the cleanerside plates 50a and 50b. Such plug cutter surface means 58 have a plate60 (FIGS. 8,l3A-13D) secured in the slot 62 (FIG. 8) in the mountingplate 64 (FIG. 8) secured to the side wall of a cleaner side plate 50aor 50b. Biasing means such as a fulcrum plate 66 or the like (FIGS.8,13A-13D) biases a plug cutter 67 (FIGS. 8,13A-l3D) on the plate 60 ofthe plug surface cutter means 58 inwardly toward the tapered surface 16of the plug 14 on the coke oven door 10.

The drive means 54 (FIGS. 5,6) are operable to cause the plug cutter 67of the plug surface cutter means 58 to engage and move along the taperon the tapered surface 16 of the plug 14 to increase the biasing betweenthe plug cutter 67 of the plug surface cutter means 58 and the taperedsurface 16 so that the plug cutter 67 of the plug surface cutter means58 removes the deleterious deposits 9 (FIGS. 7,8,13A-13C) from thetapered surface 16 during the relative movement between the cleanerframe 46 and the coke oven door 10 as shown particularly in FIGS.l3Al3D.

ALTERNATIVE EMBODIMENTS Gas Channel Cleaner Means 68 It will berecognized by those skilled in the art that alternatively as shown inFIGS. 6,7,8,13A-13D, the door cleaning apparatus 44 has a gas channelcleaner means 68 which is mounted as hereinafter described for pivotablemovement on the outside of each cleaner side plate 50a,50b in registrywith the gas channel l8.

As shown particularly in FIGS. 7,8,ll3A-13D, each gas channel cleaningmeans 68 has a generally L-shaped plate70 (FIGS. 710,13A-l3D) pivoted ona mounting member 72 (FIGS. 8,13A-13D) at 74. The mounting plate 72projects from the outside of the cleaner side plate 500, for example.The free end of the plate 70 carries a generally S-shaped cutter blade76 (FIGS. 7-10,13A-l3D). For the purpose of biasing said gas channelcleaning means 68 against the gas channel 18 during the relativereciprocating movement between the cleaner frame 46 and the coke ovendoor 10 and the pivotable movement of the gas channel cleaning means 68,a second biasing means 78 (FIG. 8) is employed.

This biasing means 78 has a rod 80 (FIGS. 7,8) extending from pivotableconnections 82 (FIGS. 7,8,13A-13C) with the plate. 70 upwardly through aguide slot 84 (FIGS. 7,8) in a bracket 86 (FIGS. 7,8) projecting fromthe upper portions of the cleaner side wall 50a, and a biasing spring 88(FIGS. 7,8) extends between the guide bracket 86 and a stop such as awasher 91 and nut 92 or the like (FIGS. 7,8) secured on threads 93(FIGS. 7,8) on the rod 80. It will be understood that the spring 88,washer 91, nut 92, and threads 93 provide the adjustable tensioning orsecond biasing means 78 for the gas channel cleaning means 68. In orderto position the cutter blade 76 of the gas channel cleaning means 68with respect to the gas channel 18, a positioning means 94 (FIG. 8) isemployed. This positioning means 94 is shown in FIGS. 7 and 8 and has amovable member, such as a screw 95 or the like (FIGS. 7,8) movable withrespect to a fixed threaded member, such as a nut 96 or the like (FIG.8), on the upper most portions of the plate 70, which screw 95 isengageable with a stop 97 (FIG. 8) upstanding from the mounting member72 of the gas channel cleaning means 68.

The second biasing means 78 connected to the gas channel cleaning means68 biases the gas channel cleaning means 68 (against the stop 97 untilthe gas channel cleaning means 68 engages the gas channel 18) toposition it relative to the gas channel 18 and biases thereafter suchgas channel cleaning means 68 against the gas channel 18 during therelative movement be tween the cleaner frame 46 and the coke oven door10 and also during the pivotable movement of the gas channel cleaningcutter plate 70 to cause the gas channel cutter blade 76 to move acrossthe gas channel 18 as shown in FIGS. BA-13D and remove the deleteriousdeposits 9 (FIGS. 7,8,13A-13D) by. the above described relative movementbetween the cleaner frame 46 and the coke oven door 10 as the gaschannel Comer Cleaning Device 98 For the purpose of cleaning a corner ofthe gas channel 18 which is not reachable by the plug surface cuttermeans 58 either at the top, bottom, or both sides thereof, a comercleaner device 98 (FIG. 7) is used. This comer cleaner device 98 (FIG.7) has a rod 99 (FIGS. 7,11,12) extending through the cleaner frame 46and carrying a corner cleaner blade 101) (FIGS. 7,11,12) on its outerend, which blade 100 is engage able with a corner to be cleaned of thedeleterious deposits 9. This rod 99 is rotatable and reciprocablymounted in the cleaner frame 46 and extends outwardly from the top end,as viewed in FIG. 7, of the cleaner frame 46 and terminates in a washer101 (FIG. 7) which washer 101 is attached as by welding or the like at101a to a nut 102 (FIG. 7) on thethreaded end 103 (FIG. 7) of the rod99. A spring 104 (FIG. 7) is also attached, as by welding or the like,at 101a to the washer 102 at its upper end as viewed in FIG. 7, and atits lower end (as viewed in FIG. 7) at 101a to the frame 46. Suchcombination forming a tensioning device 100a (FIG. 7) for the cornercleaner device 98. This tensioning device 100a (FIG. 7) associated withthe corner cleaner blade 100 biases the blade 100 against the corner ofthe gas channel 18 which is to be cleaned. A rotating means 105 (FIGS.7,11) is utilized for rotating the blade 100 across the corner whilesuch blade 100 is in contact with the comer from the position shownalong line CC to the position shown along line A-A (FIG. 12).

This rotating means 105 comprises in the embodiment of FIGS. 7 and 11 along-pitched thread 106 (FIGS. 7,11) on the rod 100 engageable with asimilarly threaded stationary nut 107 (FIGS. 7,11) on the cleaner frame46.

FIG. 14 shows an alternative embodiment of the biasing means 59 for theplug cleaning device or plug surface cutter means 58. Such biasing meansin FIG. 14 includes a bolt 108 threaded through threaded hole 109 in thecleaner side plate 50a and resting against the plate 60. After thebiasing distance D B has been set, a lock nut 110 is secured against theside of the cleaner side plate 50a" to maintain the desired biasingdistance D,,.

FIG. shows another form of the biasing means 59 and includes a pair ofguides 111a,111b mounted respectively on the side walls of the plate 60and the cleaner side plate 50a. A pair of wedges 112a,112b are insertedbetween the guides 11la,111b against the action of a retaining spring113.

FIG. 16 shows a biasing means 59 having a fluid cylinder 1 14 the piston115 of which engages a socket 1 16 in the plate 60. The fluid piston 115is mounted on a cleaner side plate 50a as by welds 117 or the like.

FIG. 17 shows yet another form of the biasing means 59 for the plugcleaning device 58 where a solenoid 1 18 mounted as by welds 119 or thelike, on the cleaner side plate 50a has its piston 119a engaged in asocket 120 on the plate 60". A suitable switch 12]. connects thesolenoid 118 to a suitable AC supply indicated by the legend From ACSupply.

In FIG. 18, the biasing means 59 has a pair of telescoping rods 122,123mounted, as by welds 124 or the like, respectively on the plate 60 andthe cleaner side plate 50a". A suitable spring 125 extends about therods 122,123 between the plates 60 and the cleaner side plate 50a".

In FIG. 19, an alternative tensioning or second biasing means 78" for agas channel cleaning device 68" has a piston 126 of a shock absorber 127pivoted at 128" on the bracket 86 projecting from the cleaner side plate50a". The other side of the shock absorber 127 is connected by a rod 129to the pivotable connection 82 with the L-shaped plate or arm 70.

In FIG. 20, a further embodiment of the tensioning means 78 has a piston131) of a fluid cylinder 131 pivotably connected at the top at 128 andsuch fluid cylinder 131 is pivoted, as in the other embodiments, at 82on the L-shaped plate at the bottom.

An alternative positioning means 94 (FIG. 21) for the gas channelcleaning device 68 has a solenoid 131 secured, as by welds 132 or thelike, to the L-shaped plate 70 of the gas channel cleaning device 68 Theoperating rod 133 of the solenoid 131 engages a socket or guide 134 onthe stop 97 upstanding from the mounting member 72.

In FIG. 22, another alternative form of the positioning means 94 for thegas channel cleaning device 68 has a fluid cylinder 135 secured, as bywelds 136 or the like, to the L-shaped plate 70 and the piston 137 againengages a socket for guide 134 on the stop 97'.

In FIG. 23, the alternative tensioning means a for the corner cleanerdevice 98 utilizes a shock absorber 138 secured, as by welds 139 or thelike, to the cleaner back plate 48 of the cleaner frame 46 and utilizesits shaft as the shaft or rod 99 for the corner cleaning device 98'.

FIG. 24 shows a further alternative tensioning means 10011 (for thecorner cleaner device 98) which utilizes a fluid cylinder 104 having itspiston employed as the shaft or rod 99 for the corner cleaning device98'.

In FIG. 25, an alternative rotating means for a corner cleaning device98 has a solenoid 141 mounted, as by welds 142 or the like, to thecleaner side plate 50a and the operating rod 143 of such solenoid 141 issuitably toothed in rack form to engage a pinion gear 144 on the shaft99 of the corner cleaning device 98 The operating rod 143 is suitablyguided by guides 145 affixed to the corner side plate 50a FIG. 26 showsyet another alternative embodiment of a rotating means 105" for a cornercleaning device 98 wherein a reversing motor 146 is mounted, by means ofwelds 147 or the like, to the corner side plate 500. The reversing motor146 has its shaft integral with the shaft 99 for the corner cleaningdevice 98 It will be noted from a consideration of FIGS. 7 and 8 thatthe cleaner frame 46 may be provided with a vibrator 148 similar to aVIBROTOR Vibrator Type CCR 5500 manufactured by Martin EngineeringCompany, Neponset, Ill. 61345, to further aid the door cleaningapparatus 10 in removing the deleterious de posits 9 therefrom.

SUMMARY OF THE ACHIEVEMENTS OF THE OBJECTS OF THE PRESENT INVENTION Itwill be understood by those skilled in the art that the objects of thepresent invention have been achieved by providing an improved doorcleaning apparatus 44 for removing carbon, tar 9, and the like from acoke oven door 10. This apparatus 44 can be readily mounted on anadjacent door removal machine 38; cleans the coke oven door 10 insubstantially few seconds; automatically cleans the tapered surfaces 16of the door plug 14, the gas channel 18, and the comers (FIG. 12) of thegas channel 18 in one operation; automatically cleans the junction linebetween the tapered surface 16 of the plug 14 and the gas channel 18; issimple and rugged in structure and provides a long maintenance-freeoperational life; utilizes segmented cutter blades 67 for the plugcleaning device 58, and segmented cutter blades 76 for the gas channelcleaning device 68 to satisfactorily clean irregular surfaces on thecoke oven door 10 caused by: (a) heat warpage of such coke oven door 10,(b) repairs to the coke oven door 10, and (c) rebuilding of the cokeoven door 10;

provides simultaneous complete cleaning of the tapered surface 16 of thedoor plug 14, the gas channel 18 and the corners (FIG. 12) of the gaschannel 18 at the end of the relative movement between the cleaningapparatus 44 (i.e., the cleaner frame 46) and the coke oven door 10; andutilizes a single force; namely, the relative movement between the cokeoven door 10 and the cleaning apparatus 44 to accomplish all cleaningoperations on the coke oven door 10.

While in accordance with the patent statutes, preferred and alternativeembodiments of this invention have been illustrated and described indetail, it is to be particularly understood that the invention is notlimited thereto or thereby.

I claim:

1. A door cleaning apparatus for removing deposits of carbon, tar andthe like from a coke oven door having a door frame, a plug on one sideof said door frame and a sealing strip on the periphery of said doorframe, said plug having a tapered surface having a taper extendingoutwardly toward said door frame and defining a gas channel with saidsealing strip, said door cleaning apparatus having;

a. a cleaner frame having a cleaner back plate and a cleaner side plateprojecting from said cleaner back plate;

' 1. said cleaner side plate and said cleaner back plate defining areceiving cavity;

b. drive means connected to one member of said cleaning apparatus andsaid coke oven door for causing relative reciprocating movement betweensaid coke oven door and said cleaner frame between, an aligned positionwhere said coke oven door and said cleaner frame are aligned and acleaning position where said cleaner frame receives said plug in saidreceiving cavity; and a plug surface cutter means mounted onthereceiving cavity side of said cleaner side plate and having biasingmeans for biasing said plug surface cutter means inwardly toward saidtapered surface of said p g;

. said drive means being operable to cause said plug surface cuttermeans to engage and move along said taper on said tapered surface ofsaid plug to increase the biasing between said plug surface cutter meansand said taper so that said plug surface cutter means removes saiddeleterious deposits from said tapered surface during said relativemovement between said cleaner frame and said coke oven door;

. gas channel cleaning means mounted for pivotable movement on theoutside of said cleaner side plate in registry with said gas channel;and

f. a second biasing means connected to said gas channel cleaning meansfor biasing said gas channel cleaning means against said gas channelduring said relative movement between said cleaner frame and said cokeoven door and said pivotable movement of said gas channel cleaning meansto cause said gas channel cleaning means to move across said gas channeland remove said deposits from said gas channel when said relativemovement causes said gas channel cleaner means to engage said gaschannel.

2. The door cleaning apparatus recited in claim 1 wherein said gaschannel cleaning means and said plug cleaning means make contact at theend of their movement to chip out said deposits from the junction linebetween said tapered surface of said plug and said gas channel.

3. A door cleaning apparatus for removing deposits of carbon, tar andthe like from a coke oven door hav ing a door frame, a plug on one sideof said door frame and a sealing strip on the periphery of said doorframe, said plug having a tapered surface having a taper extendingoutwardly toward said door frame and defining a gas channel with saidsealing strip, said door cleaning apparatus having:

a. a cleaner frame having a cleaner back plate and a cleaner side plateprojecting; from said cleaner back plate;

1. said cleaner side plate and said cleaner back plate defining areceiving cavity;

b. drive means connected to one member of said cleaning apparatus andsaid coke oven door for causing relative reciprocating movement betweensaid coke oven door and said cleaner frame between an aligned positionwhere said coke oven door and said cleaner frame are aligned and acleaning position where said cleaner frame receives said plug in saidreceiving cavity; and

. a plug surface cutter means mounted on the receiving cavity side ofsaid cleaner side plate and having biasing means for biasing said plugsurface cutter means inwardly toward said tapered surface of said P g;

. said drive means being operable to cause said plug surface cuttermeans to engage and move along said taper on said tapered surface ofsaid plug to increase the biasing between said plug surface cutter meansand said taper so that said plug surface cutter means removes saiddeleterious deposits from said tapered surface during said relativemovement between said cleaner frame and said coke oven door; and

. a corner cleaning device in registry with a corner defined byintersecting portions of said gas channel, and having:

1. a blade rotatably and reciprocably mounted in said cleaner frame,

2. tensioning means associated with said blade for biasing said bladeagainst said corner, and

3. rotating means associated with said blade for rotating said bladeacross said comer while said blade is in contact with said corner.

4. A door cleaning apparatus for removing deposits of carbon, tar andthe like from a coke oven door having a door frame, a plug on one sideof said door frame, said plug having a tapered surface having a taperextending outwardly toward said door frame and defining a gas channelwith a sealing strip on the periphery of said door frame, said doorcleaning apparatus having:

a. a cleaner frame having a cleaner back plate and a cleaner side plateprojecting from said back plate; 1. said cleaner side plate and saidcleaner back plate defining a receiving cavity;

b. gas channel cleaning means comprising a rigid plate-like scrapermounted for pivotable movement on the outside of said cleaner side platein registry with said gas channel;

c. a biasing means Connected to said scraper for biasing said scraperagainst said gas channel during said relative movement between saidcleaner frame and said coke oven door and said pivotable movement ofsaid scraper to cause said scraper to move across said gas channel andremove said deposits from said gas channel when said relative movementcauses said scraper to engage said gas channel.

5. A door cleaning apparatus for removing deposits of carbon, tar andthe like from a coke oven door having a door frame, a plug on one sideof said door frame, said plug having a taper extending outwardly towardsaid door frame and defining a gas channel with a sealing strip on theperiphery of said door frame, said door cleaning apparatus having:

a. a cleaner frame having a cleaner back plate and a cleaner side plateprojecting from said back plate, 1. said cleaner side plate and saidcleaner back plate defining a plug receiving cavity,

b. a corner cleaning device in registry with a corner defined by twointersecting portions of said gas channel, and having:

1. a blade rotatably and reciprocably mounted in said cleaner frame,

2. tensioning means associated with said blade for biasing said bladeagainst said corner, and

3. rotating means associated with said blade for rotating said bladeacross said corner while said blade is in contact with said corner.

6. The door cleaning appratus recited in claim 4 wherein:

a. said biasing means is a spring.

7. The door cleaning apparatus recited in claim 4 wherein:

a. said biasing means is a shock absorber.

8. The door cleaning apparatus recited in claim 4 wherein:

a. said biasing means is a fluid cylinder.

9. The door cleaning apparatus device recited in claim 4 and having:

a. positioning means associated with said gas channel cleaning devicefor positioning said gas channel cleaning device in registry with saidgas channel.

10. The door cleaning apparatus recited in claim 5 wherein saidtensioning means is a spring.

11. The door cleaning apparatus recited in claim 5 wherein saidtensioning means is a shock absorber.

12. The door cleaning apparatus recited in claim 5 wherein saidtensioning means is a fluid cylinder.

13. The door cleaning apparatus recited in claim 5 having a secondpositioning means on said tensioning means.

14. The door cleaning apparatus recited in claim 5 wherein said rotatingdevice is a stationary threaded sleeve on the cleaner frame and athreaded rod engageable with said stationary threaded sleeve.

15. The door cleaning apparatus recited in claim 5 wherein said rotatingmeans is a solenoid.

16. The door cleaning apparatus recited in claim 5 wherein said rotatingmeans is a reversing motor.

17. The door cleaning apparatus recited in claim 4 wherein said gaschannel cleaning means is segmented.

18. The door cleaning apparatus recited in claim 4 and having vibratorymeans on said cleaner frame.

1. A door cleaning apparatus for removing deposits of carbon, tar andthe like from a coke oven door having a door frame, a plug on one sideof said door frame and a sealing strip on the periphery of said doorframe, said plug having a tapered surface having a taper extendingoutwardly toward said door frame and defining a gas channel with saidsealing strip, said door cleaning apparatus having; a. a cleaner framehaving a cleaner back plate and a cleaner side plate projecting fromsaid cleaner back plate;
 1. said cleaner side plate and said cleanerback plate defining a receiving cavity; b. drive means connected to onemember of said cleaning apparatus and said coke oven door for causingrelative reciprocating movement between said coke oven door and saidcleaner frame between an aligned position where said coke oven door andsaid cleaner frame are aligned and a cleaning position where saidcleaner frame receives said plug in said receiving cavity; and c. a plugsurface cutter means mounted on the receiving cavity side of saidcleaner side plate and having biasing means for biasing said plugsurface cutter means inwardly toward said tapered surface of said plug;d. said drive means being operable to cause said plug surface cuttermeans to engage and move along said taper on said tapered surface ofsaid plug to increase the biasing between said plug surface cutter Meansand said taper so that said plug surface cutter means removes saiddeleterious deposits from said tapered surface during said relativemovement between said cleaner frame and said coke oven door; e. gaschannel cleaning means mounted for pivotable movement on the outside ofsaid cleaner side plate in registry with said gas channel; and f. asecond biasing means connected to said gas channel cleaning means forbiasing said gas channel cleaning means against said gas channel duringsaid relative movement between said cleaner frame and said coke ovendoor and said pivotable movement of said gas channel cleaning means tocause said gas channel cleaning means to move across said gas channeland remove said deposits from said gas channel when said relativemovement causes said gas channel cleaner means to engage said gaschannel.
 2. The door cleaning apparatus recited in claim 1 wherein saidgas channel cleaning means and said plug cleaning means make contact atthe end of their movement to chip out said deposits from the junctionline between said tapered surface of said plug and said gas channel. 2.tensioning means associated with said blade for biasing said bladeagainst said corner, and
 2. tensioning means associated with said bladefor biasing said blade against said corner, and
 3. rotating meansassociated with said blade for rotating said blade across said cornerwhile said blade is in contact with said corner.
 3. A door cleaningapparatus for removing deposits of carbon, tar and the like from a cokeoven door having a door frame, a plug on one side of said door frame anda sealing strip on the periphery of said door frame, said plug having atapered surface having a taper extending outwardly toward said doorframe and defining a gas channel with said sealing strip, said doorcleaning apparatus having: a. a cleaner frame having a cleaner backplate and a cleaner side plate projecting from said cleaner back plate;3. rotating means associated with said blade for rotating said bladeacross said corner while said blade is in contact with said corner.
 4. Adoor cleaning apparatus for removing deposits of carbon, tar and thelike from a coke oven door having a door frame, a plug on one side ofsaid door frame, said plug having a tapered surface having a taperextending outwardly toward said door frame and defining a gas channelwith a sealing strip on the periphery of said door frame, said doorcleaning apparatus having: a. a cleaner frame having a cleaner backplate and a cleaner side plate projecting from said back plate;
 5. Adoor cleaning apparatus for removing deposits of carbon, tar and thelike from a coke oven door having a door frame, a plug on one side ofsaid door frame, said plug having a taper extending outwardly towardsaid door frame and defining a gas channel with a sealing strip on theperiphery of said door frame, said door cleaning apparatus having: a. acleaner frame having a cleaner back plate and a cleaner side plateprojecting from said back plate,
 6. The door cleaning appratus recitedin claim 4 wherein: a. said biasing means is a spring.
 7. The doorcleaning apparatus recited in claim 4 wherein: a. said biasing means isa shock absorber.
 8. The door cleaning apparatus recited in claim 4wherein: a. said biasing means is a fluid cylinder.
 9. The door cleaningapparatus device recited in claim 4 and having: a. positioning meansassociated with said gas channel cleaning device for positioning saidgas channel cleaning device in registry with said gas channel.
 10. Thedoor cleaning apparatus recited in claim 5 wherein said tensioning meansis a spring.
 11. The door cleaning apparatus recited in claim 5 whereinsaid tensioning means is a shock absorber.
 12. The door cleaningapparatus recited in claim 5 wherein said tensioning means is a fluidcylinder.
 13. The door cleaning apparatus recited in claim 5 having asecond positioning means on said tensioning means.
 14. The door cleaningapparatus recited in claim 5 wherein said rotating device is astationary threaded sleeve on the cleaner frame and a threaded rodengageable with said stationary threaded sleeve.
 15. The door cleaningapparatus recited in claim 5 wherein said rotating means is a solenoid.16. The door cleaning apparatus recited in claim 5 wherein said rotatingmeans is a reversing motor.
 17. The door cleaning apparatus recited inclaim 4 wherein said gas channel cleaning means is segmented.
 18. Thedoor cleaning apparatus recited in claim 4 and having vibratory means onsaid cleaner frame.